I claim the ornamental appearance of a sawhorse, as shown and described.
FIG. 1 is a top perspective view of a sawhorse, with the broken line showing of a bolt being for illustrative purposes and forming no part of the claimed design;
FIG. 2 is a right side elevational view thereof with the left side being a mirror image, with the broken line showing of a bolt being for illustrative purposes and forming no part of the claimed design;
FIG. 3 is an end elevational view thereof with the opposite end being a mirror image, with the broken line showing of a bolt being for illustrative purposes and forming no part of the claimed design;
FIG. 4 is a top view thereof, with the broken line showing of a bolt being for illustrative purposes and forming no part of the claimed design; and,